3
An earthquake is detected at three
seismograph stations. The location of the
earthquake epicenter and its distance
from the three stations are shown in the
map.
Earthquake Map
Epicenter
25 miles
Station X
Station Y
50 miles
10 miles
Station Z
The Seismograph Data diagram shows a
seismograph line for each station.
Place one wave on each seismograph line
to create three seismographs showing the
relative arrival time of the earthquake at
each station.
IM
Hm
Hm
IM
Station X
Station Y
Station Z
O
Cack and drag to move objects
Seismograph Data
Time